Security readout for executives and security teams
Plain-English summary
Affected Adobe ColdFusion servers may accept a dangerous file upload that allows a remote, unauthenticated attacker to run code. Successful compromise could expose data, alter systems, or disrupt service. ColdFusion 2025.9 and 2023.20 and earlier are identified as affected.
Executive priority
Handle as an emergency remediation item. A CVSS 10 unauthenticated remote-code-execution flaw presents severe compromise potential, particularly on internet-facing systems. Do not delay solely because the supplied sources contain no evidence of active exploitation.
Technical view
CVE-2026-48276 is a CWE-434 unrestricted upload vulnerability enabling arbitrary code execution in the current user context. Its CVSS 3.1 vector indicates network access, low complexity, no privileges, no user interaction, changed scope, and high confidentiality, integrity, and availability impact.
Likely exposure
Treat network-reachable installations running ColdFusion 2025.9, ColdFusion 2023.20, or earlier versions as potentially exposed. The supplied sources do not identify a specific endpoint, required configuration, or affected upload feature, so exposure cannot be narrowed further from this bundle.
Exploitation context
The vulnerability is remotely exploitable without authentication or user interaction according to its CVSS vector. The bundle does not provide exploit details or evidence of active exploitation, and the CVE is not listed as KEV. KEV absence does not prove exploitation is absent.
Researcher notes
The bundle establishes CWE-434 and arbitrary code execution but does not identify the vulnerable component, request path, accepted file types, prerequisites, indicators, or exploit availability. Adobe's advisory should govern remediation decisions because its detailed contents and fixed-version instructions are not reproduced here.
Mitigation direction
- Review Adobe APSB26-68 immediately for the supported fixed update or mitigation.
- Apply Adobe's documented remediation to every affected instance after appropriate change testing.
- Prioritize externally reachable ColdFusion servers and systems processing sensitive or business-critical data.
Validation and detection
- Inventory ColdFusion installations and record each product release and exact update level.
- Compare installations against the affected 2025.9-and-earlier and 2023.20-and-earlier ranges.
- Confirm remediation using installed-version evidence and Adobe APSB26-68 guidance.
- Review affected-period logs for suspicious uploads or unexpected code execution in the server user context.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-434: File access and web shell behavior lookup
File traversal and upload weaknesses can lead teams to review file, web shell, execution, and collection telemetry. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2026-48276 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Critical
- CVSS
- 10 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
SSVC decision data
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H3.96adobeVulnerability scoring details
Base CVSS 3.1 score
10CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://helpx.adobe.com/security/products/coldfusion/apsb26-68.htmlCVE reference, adobe · vendor-advisory
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Unrestricted Upload of File with Dangerous Type
Unrestricted Upload of File with Dangerous Type represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.